Makefile

THIS		:= $(dir $(abspath $(lastword $(MAKEFILE_LIST))))
include		Defaults.mk

TARGET_DIR	= $(BUILD_DIR)

KERNEL_BIN		:= $(KERNEL_DIR)/kernel.elf
VOS_BIN			:= $(BUILD_DIR)/vos.elf

LDFLAGS	:= -T $(SRC_DIR)/vos.ld -nostdlib -static -pie --no-dynamic-linker --gc-sections
LDLIBS	= $(filter-out %$(USERSPACE_SUFFIX)_c.o,						\
			$(shell find $(LIBS_DIR)/ -maxdepth 1 -type f -name '*.o')	\
			$(shell find $(LIBS_DIR)/ -maxdepth 1 -type f -name '*.ro')	\
		)

MODULES_LDFLAGS	:= -nostdlib -static -pie
MODULES_ROS		= $(shell find $(MODULES_DIR)/ -maxdepth 3 -type f -name '*.ro')
MODULES_TARGETS	= $(foreach module,$(MODULES_ROS),												\
					$(dir $(patsubst %/,%,$(dir $(module))))$(basename $(notdir $(module))).elf	\
				)	
USERSPACE_LIBS	= $(shell find $(LIBS_DIR)/ -maxdepth 1 -type f -name '*.a')

###############################################################################

all:			$(BOOTLOADER) $(LIBC) $(KERNEL) $(BUILD_DIR)/$(OSNAME).img

.PHONY: setup
setup:	
				@mkdir -p $(BUILD_DIR)
ifdef ASMDUMP
				@mkdir -p $(ASMDUMP_DIR)
endif

###############################################################################

.PHONY:	libs
libs:			setup
				$(call echo_build)
				+ $(MAKE) --no-print-directory -f $(SRC_DIR)/$(LIBS)/Makefile THIS=$(SRC_DIR)/$(LIBS) TARGET_DIR=$(LIBS_DIR)

.PHONY: kernel
kernel:			setup
				$(call echo_build)
				+ $(MAKE) --no-print-directory -f $(SRC_DIR)/$(KERNEL)/Makefile THIS=$(SRC_DIR)/$(KERNEL) TARGET_DIR=$(KERNEL_DIR)

.PHONY:	modules
modules:		setup
				$(call echo_build)
				+ $(MAKE) --no-print-directory -f $(SRC_DIR)/$(MODULES)/Makefile THIS=$(SRC_DIR)/$(MODULES) TARGET_DIR=$(MODULES_DIR)

###############################################################################

$(VOS_BIN):		$(KERNEL_BIN)
				mv $(KERNEL_BIN) $(VOS_BIN)
.PHONY: vos
vos:			$(VOS_BIN) $(MODULES_TARGETS)

###############################################################################

RM_OBJ	:= rm -rf *.o *.a *.so *.elf
RM_IMG	:= rm -rf *.img *.iso *.vdi

.PHONY: clean-libs
clean-libs:			clean-img
					rm -rf $(LIBS_DIR)

.PHONY: clean-kernel
clean-kernel:		clean-img
					cd $(BUILD_DIR) && $(RM_OBJ)
					rm -rf $(KERNEL_DIR)/
ifneq "$(wildcard $(ASMDUMP_DIR))" ""
					cd $(ASMDUMP_DIR) && rm -rf *.s
endif

.PHONY:	clean-modules
clean-modules:		clean-img
					rm -rf $(MODULES_DIR)

.PHONY: clean-img
clean-img:		
					cd $(BUILD_DIR) && $(RM_IMG)

.PHONY: clean
clean:		
					rm -rf $(BUILD_DIR)

###############################################################################

include Rules.mk

MODULE_LIBS	= $(filter $(MODULES_DIR)/$*/%.ro, $(MODULES_ROS))

$(MODULES_DIR)/%.elf:	
					$(LD) $(MODULES_LDFLAGS) $(MODULE_LIBS) $(USERSPACE_LIBS) -o $@